Automatic feed-water regulator for steam-boilers



(No Model.)

J. OHRISTMAN. AUTOMATIC FEED WATER REGULATOR POE STEAM BOILERS. No. 269,612.

Patented Dec. 26, 1882.

N. PETERS, PMtoUI-hognphor. Wishinghm, n. a

' UNITED STATES PATENT OFFICE.

JOHN CHRISTMAN, OF SYRACUSE, NEW YORK.

AUTOMATIC FEED-WATER REGULATOR FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 269,512, dated December 26, 1882.

(No model.)

To all-whom it may concern:

Be it known that 1, JOHN UHRISTMAN, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Automatic Feed-Water Regulators for Steam-Boilers, of which the following, taken in connection with the accompanying drawings, is. a full, clear, and exact description.

This invention relates to a novel, simple, and effective device designed to automatically control the supply of water to steam-boilers; and it consists essentially in the control of the admission of steam to the feed-pump or injector by the rise and fall of the water in the boiler, all ashereinatter fully described, and

specifically set forth in the claims.

Referring to the annexed drawings, Figure 1 is an elevation of my invention, illustrating its connection with the boiler and with the pump which supplies the boiler with water. Fig. 2 is an enlarged vertical transverse section of my invention. Fig. 3 is a further enlarged horizontal section on line or m in Fig.2, and Fig. 4 is an enlarged detail view of the scraper or cleaner connected with the waterpipe of my automatic feed-water controller.

Sim lar letters of reference indicate corresponding parts. i

B denotes a steam-boiler, which may be of any ordinary style and size, and P represents the pump which supplies the boiler with water.

A is a cylindrical chamber placed in a vertical positionand relatively at the same elevation as the boiler, with which it communicates at its top and bottom by pipes to and b, tapping the boiler respectively above and below the standard water-line thereof, the water-connection between the cylinder A and boiler B being effected by the aid of a stop-cock,n, interposed between the bottom of the cham her A and pipe I), so as to admit of excluding the water from said chamber when desired. e

To prevent the clogging of the pipe b, I

apply to the interior of the end thereof which enters the boiler a perforated disk, as shown in Fig. 4 of the drawings. A manipulatingrod, in, is extended from the disk 71, longitudinally through the pipe I) and through a studing-box on the outer end ofsaid pipe, and is provided at its extremity with a suitable handle,

by means of which the disk h can be drawn through the pipe, and thereby caused to effect ually clean the interior thereof, the inner end of the pipe I) being provided with longitudinal slots l, through which the water entersvsaid pipe. The top of the cylinder A is provided with a steam-eduction port or channel, 0, arranged central ot' the axis of the cylinder, and from the port 0 is extended the steam-pipe I). which supplies the motive power to the pump .P, said pump having its discharge-pipe E extended -to the water-space of the boiler and supplying said boiler with water.

F represents a float in the form of a light hollow globe, which may be formed of thin sheet metal or other suitable material. To the bottom of this globe is attached a horizontal disk, f. which spans the cylinder A for the purpose hereinafter explained, and from the top of the globe rises a valve-stem, e, which is in range with the ed notion-port c, and terminates with a conical end titted to a corresponding conical valve-seat, d, secured to the mouth of stem 6 of such length that when the Water in the boiler approaches its maximum height the float F is caused to close the aforesaid eduction-port by forcing the valve-stem a into the valve-seat (I, thus shutting offsteam from the pump P, and consequently stopping the operation of the same. Simultaneously with the fall of the wateriu the boiler the float, with its Valve-stem e, recedes from the steameduction port 0 and opens the same to admit steam to the pump P, thereby setting the same in opereration to force water into the boiler.

It is to render more positive the fall of the floatf, for which the diskf is attached to the float, since the pressure of the steam is uniform on all sides of the globular float or radially caused to maintain the eduction-port closed I after the water in the cylinder A has receded.

This I overcome by the medium of the disk f spanning the cylinder A, and receiving a direct vertical pressure from the water rising and falling in the cylinder, and thus compel ling the float tofollowthe water morepositively.

In order to admit of controlling the valve of and also prevent the float from dropping farther than necessary to open the aforesaidvalve,

1 connect to the end of the valve-stem a rod, 1', which projects upward through the port or channelc and through a spider or skeleton diaphragm, S, which is seated on a shoulder or oflset on the interior of the port 0, as shown in Fig. 2 of the drawings. A collar or nut is secured to the rod 1' above the spider S in such relative position as to arrest by its collision with said spider the descent of the float pendent from the rod 1'. Over the 'end of the rod 1*, and in range therewith, is ascrew-theaded push-rod, t,working in a screw-threaded stuffing-box, u, applied to the upper end of the port 0.

\Vhenever it is desired to open the valve of the steam-eduction port 0 before the same is effected by the fall of the water in the boiler in the manner before described, the push-rod can be turned to carryit down into the port 0, and'hy its collision with the end of the rod 1 itforces the valve-stem away from the valveseat 67, thus opening the eduction-port c.

It will be observed that my automatic feedwater controller is so organized as to effectually avoid friction and all other defects which might tend to impair its efficiency.

Having described my inventiomwhat I claim as new,and desire to secure by Letters Pateat, is-

1. The combination, with an upright cylinder communicating \viththe steam and water spaces of a boiler and afloat arranged within said cylinder, of a horizontal disk suspended from the float and spanning the cylinder, substantially as and for the purpose specified.

' 2. An automatic feed-water controller for steam-boilers, consisting of an upright cylindrical chamber communicating with the steam and water spaces of the boiler, and having a steam-eduction port communicating with the actuating-cylinder of the feed-water pump, a float arranged to control the egress of steam from said chamber, and a horizontal disk suspended troin the float and spanning the chamber to receive a direct vertical water-pressure, and thereby overcome any suction that may be exerted on the float by the steam-eduction port, substantially as set forth.

3. The combination, with the cylinder A. provided with the steam and water pipes at and b, of the steam-eduction port 0, arranged central of the axis of the cylinderand provided with the valve-seat d, and the float F, provided with the horizontal disk f, and the valve-stem e, projecting upward from the center of the float, substantially as shown and set forth.

4. Thecombination, with the cylinder A, provided with the steam and water pipes a and b, and with the steain-ednction port 0, and the 

